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Can a simple supplement protect transplant patients? healthy volunteers pave the way

NCT ID NCT07611370

Knowledge-focused Sponsor: City of Hope Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This early-stage study tests whether healthy volunteers can regularly take two natural gut supplements, propionate and butyrate, which are normally made by the body. The goal is to see if this approach is safe and practical before trying it in patients receiving donor stem cell transplants, who often suffer gut damage. Twelve healthy adults aged 18 to 75 will take the supplements for a short time, and researchers will monitor how well they tolerate them and any side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 12 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Jun 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 75 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Documented informed consent of the participant and/or legally authorized representative * Age: ≥ 18 years and ≤ 75 years old * Ability to read and understand and willingness to sign a written informed consent * Ability to understand English to fill out required forms (e.g. Pill Diary and Symptom Diary) * Participants are not taking butyrate or propionate as supplement(s) * Those who are already taking butyrate or propionate as supplement(s) are allowed only if they are willing to stop the supplement(s) ≥ 7 days prior to baseline samples and for the duration of this study Exclusion Criteria: * History of migraines and chronic gastrointestinal diseases, such as inflammatory bowel disease or Crohn's disease * History of allergic reactions to compounds of similar chemical or biologic composition to study agent * Females only: Pregnant, breastfeeding, or planning to get pregnant * Antibiotic exposure within 2 weeks prior to day 1 of study

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Conditions

The condition(s) this trial relates to.

cancer graft versus host disease hematopoietic and lymphoid system neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Graft versus host disease Hematopoietic and lymphatic system neoplasm Malignant solid neoplasm

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • City of Hope Medical Center

    Duarte, California, 91010, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.